Home / 10,638.38-15,957.78-2,847.12

Finding the Fourth Proportional to 10,638.38, 15,957.78 and 2,847.12

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Solution

The fourth proportional to 10,638.38, 15,957.78 and 2,847.12 is: 4,270.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.38 : 15,957.78 = 2,847.12 : x
  2. Step 2: Convert to fraction form
    10,638.38/15,957.78 = 2,847.12/x
  3. Step 3: Cross multiply
    10,638.38x = 15,957.78 × 2,847.12
  4. Step 4: Simplify right side
    10,638.38x = 45,433,714.59
  5. Step 5: Solve for x
    x = 45,433,714.59/10,638.38
  6. Step 6: Final answer
    x = 4,270.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.